Table 4.

Age-specific subgroup analysis for mortality

Age (years)	Non-SARS viral respiratory tract infection (n = 253)			SARS respiratory tract infection (n = 322)
	Survived	Died	Mortality (%)	Survived	Died	Mortality (%)
0–20	7	2	22	7	0	0
21–30	11	0	0	108	0	0
31–40	11	0	0	79	0	0
41–50	10	1	9	38	3	7
51–60	25	0	0	34	3	8
61–70	43	1	2	11	5	31
71–80	68	0	0	6	14	70
81–90	63	3	5	6	5	46
91–100	7	1	13	0	3	100
Total	245	8	–	289	33	–